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IC2 VHiLC78622K-1: Servo/Signal Control (LC78622K) (2/2)
Terminal Name Input/Output
Pin No.
49*
PW
50*
SFSY
51
SBCK
52*
FSX
53
WRQ
54
RWC
55
SQOUT
56
COIN
57
CQCK
58
RES
59*
TEST11
60*
16M
61
4.2M
62
TEST5
63
CS
64
TEST1
Note: The same potential must be supplied to the power terminals (VDD, VVDD, LVDD, RVDD, XVDD).
In this unit, the terminal with asterisk mark (*) is (open) terminal which is not connected to the outside.
DEFI
Slice level
control
EFMIN
Sync detection
FSEQ
EFM demodulation
CLV+
C L V
Digital servo
CLV-
V/P
PW
Subcode division
SBCK
SBSY
QCRC
SFSY
CS
µ C O M
WRQ
Interface
SQOUT
CQCK
COIN
Servo commander
RWC
Output
Output terminal of subcodes P, A, R, S, T, U and W.
Output
Output terminal of synchronous signal of subcode frame. It drops when subcode stands by.
Input
Clock input terminal to read subcode. Schmit input (Connected to 0V when not used.)
Output
Output terminal of synchronous signal of 7.35kHz divided from quartz oscillation.
Output
Output terminal to stand by output of subcode Q.
Input
Input terminal of read/write. Schmit input.
Output
Output terminal of subcode Q.
Input
Command input terminal from microcomputer.
Input
Clock input terminal to fetch command input, or pick up subcode from SQOUT. Schmit input
Input
Reset input terminal of LC78622. When turning on power, set it at "L".
Output
Output terminal for test. Used in the open state ("L" output as ordinary).
Output
Output terminal of 16.9344Hz.
Output
Output terminal of 4.2336MHz.
Input
Input terminal for test Pull-down resistor is integrated. Surely connected to 0V.
Input
Chip selection input terminal. Pull-down resistor is integrated.
Connected to 0when not controlled.
Input
Input terminal for test Pull-down resistor is integrated. Surely connected to 0V.
VCO colck oscillation
clock control
Flag processing of C1/C2
error detection and correction
General-use port
Figure 53 BLOCK DIAGRAM OF IC
Function
2 K x 8 b i t
R A M
XTAL system timing
generator
– 53 –
CD-C478/478C
RAM address
generator
Interpolation mute
Bilingual
Digital OUT
Digital
attenuator
X4 oversampling
digital filter
1 b i t D A C
L . P . F
C2F
DOUT
(NC)
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